Titles on posts appearing with HTML code rather than as normal

I am over at thesimplegamers.com and at moment randoms posts have the link code appearing rather than the link itself. Its only happened to 3 posts out of all of them so far but I have not yet found a solid solution for it.

your theme seems to be using a plugin or build-in code to mark (multiple) capital letters;

which seems to mess with the title attribute of the post title link:

<h2><a title="If you like that shit, put a <span class="caps">LEGO</span> on it." href="http://thesimplegamers.com/putalegoonit/" rel="bookmark">If you like that shit, put a <span class="caps">LEGO</span> on it.</a></h2>

also, the theme is not using the_title_attribute() in the linked post title (in index.php inside the loop).